I like czargb's PSU mount, but wanted the power button facing towards the front of the enclosure. This hook allows you to do that without reprinting any of the other components of Delta PSU (black) Prusa MK3S Lack Enclosure parts model by czargb. Be sure to down load czarb's PSU cover and PSU bracket to go with.
https://www.printables.com/model/16832-delta-psu-black-prusa-mk3s-lack-enclosure-parts
The author remixed this model.
Changed the psu hook to allow psu to mounted in a different orientation.